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The average window in which freezing temperatures may occur is between November 15 and March 19, allowing a growing season of 240 days. [88] Annual snowfall in Portland is 4.3 inches (10.9 cm), which usually falls between December and March. [89]
The monthly average high temperature ranges from roughly 30 °F (−1 °C) in January to around 80 °F (27 °C) in July. Daily high temperatures reach or exceed 90 °F (32 °C) on only four days per year on average, while cold-season lows of 0 °F (−18 °C) or below are reached on 10 nights per year on average. [ 29 ]
The heaviest snowfalls in Oregon occur in the Cascade Range.. Snowfall in Oregon is greatest in the Cascade Range. Based on data from ski resorts and a few official weather stations, average annual snowfall in the Cascades can range from 300 to 550 inches (760 to 1,400 cm). [3]
The third letter indicates the degree of summer heat—a indicates warmest month average temperature above 22 °C (71.6 °F) while b indicates warmest month averaging below 22 °C but with at least four months averaging above 10 °C (50.0 °F), and c indicates one to three months averaging above 10 °C (50.0 °F). [8] [10] [7]
Oregon's highest point is the summit of Mount Hood, at 11,249 feet (3,429 m), and its lowest point is the sea level of the Pacific Ocean along the Oregon Coast. [2] Oregon's mean elevation is 3,300 feet (1,006 m).
The third letter indicates the degree of summer heat: "a" represents an average temperature in the warmest month above 22 °C (72 °F), while "b" indicates the average temperature in the warmest month below 22 °C (72 °F). There is a "c" with 3 or less months' average temperature above 10 °C (50 °F), but this climate is rare and is very ...
A similar scenario is expected in Portland, where temperatures will flirt with the 100-degree mark, about 5-15 degrees above the historical average, ... and monthly record-high temperatures in ...
This is a list of countries and sovereign states by temperature. Average yearly temperature is calculated by averaging the minimum and maximum daily temperatures in the country, averaged for the years 1991 – 2020, from World Bank Group , derived from raw gridded climatologies from the Climatic Research Unit .